Rotary grooving-tool.



N0. 705,268; Patented July 22, I902.

- A. B; MEISTER. ROTARY enoovms TOOL.

(Application filed Apr. 10, 1902.) (No Model.) 2 Sheets-Sheet l.

Patented July 22, I902.

A. R, MEISTER.

ROTARY GROOVING TOOL.

(Application filed Apr. 10, 1902.)

2 $heets-$heet 2.

(N0 Model.)

THE nonms PETERS cu. womLlYno, uusmusYo-. n. c.

UNITED STATES PATENT OFFICE.

ALBERTR. MEISTER, OF SACRAMENTO, CALIFORNIA.

ROTARY G ROOVlNG-TOO L.

SPECIFICATION forming part of Letters Patent No. 705,268, dated July 22, 1902.

Application filed April 10, 1902.

To all whom it may concern.-

Be it known that I, ALBERT R. MEISTER, a citizen of the United States, residing at Sacramento, county of Sacramento, State of California, have invented an Improvement in R0- tary Grooving-Tools; and I hereby declare the following to be a full, clear, and exact de scription of the same.

My invention relates to improvemen ts'in woodworking-tools of the class known as jiggers or grooving devices. provide a simple light rotary cutter that can be held in the hands and which is capable of use wherever an irregular groove or channel is to be out, such as cannot ordinarily be done by means of a stationary grooving-machine. It is intended particularly for use in coach and carriage manufacture where it is desired to mortise the parts intended to receive the edges of the panels. Frequently the latter are not only curved along their edges, but' are also transversely curved or convexed. Accordingly the part into which these edges fit must have agroove or mortise corresponding to the curvatures of the panel. To form such a groove by the ordinary routing-tool has always been a matter of extreme difficulty and has required a very considerable amount of skill and labor on the part of the workman.

The invention consists of a rotary cutter or saw mounted upon a handle which is adapted to be grasped at either end by the operator and guided somewhat after the manner of a draw-shave and flexible shaft connections by which said cutter is revolved. It comprises details which will be more fully set forth hereinafter, having reference to the accompanying drawings, in which' Figure 1 is a perspective view of my invention. Fig. 2 is a vertical longitudinal section. Fig. 3 shows the application of the device.

A represents a handle adapted to be grasped at either end. A rotary cutter or saw 2 is mounted centrally of the handle upon a shaft 3. The latter is provided with a flange 4:, which is substantially flush with the bottom or lower side of the handle. Thislower side Its object is to- Serial No. 102,181. (No model.)

is shod or protected by a plate 5, as in operation the tool is supported on this plate, as shown in Fig. The cutter is separated a suitable distance by means of the spacingplate 6. The saw can be removed at any time by means of the screws 7. The plate 8 on the upper side of the handle has a central reinforcement or portion 9, carrying the annular row of antifricional members or balls 10. The flange 4 serves as the opposite bearing-surface for these balls. The shaft 3 is screw-threaded to receive an adjustable ballbearing 11 and a set-nut 12. Motion is imparted to the saw by means of S the flexible shafting 13.

In operation the tool is grasped by both hands and laid upon the piece ofwood, as 14, which is to be grooved with theplate 5 resting upon that surface 15 of the piece which shall beparallel with the completed groove 16. Thedevice is in fact an under-cutting as distinguished from a surface-grooving tool,

and thewidth of the outer wall of the groove depends on the thickness of the spacingplate 6. The surface 15 of the piece serves 'as a support for the tool as the latter is guided thereover much after the manner of a drawshave. One is thus able to cut an absolutelyuniform groove or mortise along an edge or surface of almost any configuration.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-- 1. The combination in a grooving-tool of a handle and a revoluble cutter mounted thereon between opposite ends and turnable in a plane parallel with the handle.

2. The combination in a grooving-tool of a handle adapted to be engaged at either end, a revoluble cutter turnable i'n a'pl'ane parallel with the handle, and.transverselyrextending means intermediate of its ends forsupporting said cutter. g

3. The combination in a grooving-tool of a handle, a transverse revoluble shaft supported intermediate of the ends of said handle, a cutter mounted on said shaft and turnable in a plane parallel with said handle, and

means by which the space intermediate of connections between said shaft; and a source the saw and handle may be varied. of power. 10

4. The combination in a grooving-tool of In Witness whereof I have hereunto set my a handle adapted to be grasped at either end, hand.

a cutter, a revolnble shaft; disposed trans- ALBERT R. MEISTER. versely of the handle, and having a flange to Witnesses: which said cutter is secured, antifricbional MANUEL SILVA,

supporting means for said shaft and flexible CHARLES E. MEISTER. 

